Eugene



(N0 Model.)

' E- G. LESTER.

GLAMP FOR GULTIVATOR TEETH. No. 590.844. Patented Sept. 28, 1897.

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vxx 6/ 1 l W E kg MM f ir 5 UNITED STATES PATENT Erica- EUGENE O. LESTER OF ALBION, MICHIGAN, ASSIGNOR TO THE GALE MANUFACTURING COMPANY, OF SAME PLACE.

CLAM P .FOR CU LTlVATO R-TEETH.

SPECIFICATION forming part Letters Patent No. 590,844, dated September 28, 1897. Application filed June 21, 1897. Serial No. 641,692. (No model.)

To all whom it may concern.-

Be it known that I, EUGENE O. LESTER, a citizen of the United States, residing at Albion, in the county of Calhoun and State of Michigan, have invented certain new and useful Improvements in Clamps for Cultivator- Teeth and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to Cultivators; and it consists in a new construction and new combination of parts forming an improved clamp for holding the cultivator-tooth to the beam.

In the drawings I have shown the best form in which I have contemplated embodying my invention, and my said invention is disclosed in the following description and claims.

In the drawings, Figure 1 is a partial rear view of a cultivator bar or beam with two teeth attached thereto by my improved fastening. Figs. 2, 3, andt are detail views,.on a larger scale, to more clearly illustrate the construction of my device, Fig. 2 being a vertical sectional View through the beam, Fig. 3 a horizontal section between the two bars or plates forming the beam, and Fig. 4 a rear eletion of theclamp with the bolts removed.

In cultivators, and more especially in the class of orch ard-cultivators,the beam to which the teeth are attached is frequently made of two flat bars 01' plates and the teeth are secured in place by clamping the tooth-stem.

against the two bars by a bolt drawing a casting which passes part way between the two bars and which is drawn against the tooth by a bolt. ploy two bolts and in other ways strengthen and improve the parts.

- In the drawings, A A are the two flat bars or plates forming the tooth-beam of the cultivator. I

B is the casting or clamp. This casting, whichwill be of malleable cast metal, is of the general shape shown in Figs. 2, 3, and 4. The forward part of the casting or clamp is made of a size to pass between the bars AA of the beam. This forward end is rounded from side to side, as shown in Fig. 3, and does In my improved construction I emnot extend entirely through between the bars A A. Rearwardly of the beam the clamp or casting inclines upwardly and downwardly to give abroad bearing upon the rear edge of the tooth stem or shank. The clamp is provided with a slot B, running lengthwise thereof, to receive the shank or stem of the tooth 0. Around the back and sides the clamp or casting is provided with outwardlyextending flanges b 17, giving additional strength without greatly increasing the weight. Between the front and rear of the casting or clamp the two flanges b b are connected by a broad web 0, which is provided with an open slot 0 to receive the body of an attaching-bolt D. The space between the flanges b b at this point is but littlemore than the width of the head of the bolts employed, so that when placed in position the head of the bolt will be held from turning, while the head will engage the web on all sides except one.

The webs c are provided with lips e, which extend outwardly'a short distance beyond the flanges b b, and these lips are bent inwardly.

upon the bolts when the tooth has been secured to the beam, thereby holding the bolts in their slots and preventing their displacement.

The securing-bolts D I) pass to the front of ,thebeam and through the bolt-plate E, the

nuts of the bolts being turned up against this plate. I This securing plate is preferably notched or grooved to engage the edges of the flat bars forming the beannas shown in Fig. 2., This plate might be dispensed with by using a large washer on each bolt or the plate might be made of different form.

The mode of using my improved clamp will be obvious from the foregoing description and clamp being provided on each side with a seat for a securing-bolt, intermediate the front and rear faces of the clamp, and the securingbolts, substantially as described.

2. As a securing device for the teeth of cultivators the clamp or casting having attop and bottom the strengthening-flanges, a Web on each side connecting said flanges, recessed to receive the body of a securing-bolt, and the secnring-bolts, substantially as described.

3. As a securing device for the teeth of cultivators, consisting of the clamp or casting having at top and bottom the strengtheningi l l 

